% hitori 473 by Otto Janko, http://www.janko.at/Raetsel/Hitori/473.a.htm
hitori
medium-
10 10
7174533846
7578662994
8465323419
4986291755
845919723a
32179745a8
21318175a6
97a5a88133
a4944a8321
13127a8615
